YARN Devs, *Updates since Sep 22, 2016:*
We sent a merge YARN-3368 discussion email on Sep 22, 2016 and received some valuable feedbacks, since then, we have updated: *- The biggest change* is configuration model, the latest UI project doesn't require to configure RM/Timeline-server's address in a separate config (configs.env) any more, it will directly get timeline server address from REST endpoint of RM, more details please refer to (YARN-5145) And some minor fixes: - Moved all temporary ember/npm build stuffs to target/ like all the other projects. - Removed unnecessary files in source tree and ASF license exclusions. *Main content:* We propose to merge YARN-3368 (YARN next generation web UI) development branch into trunk for better development, would like to hear your thoughts before sending out vote mail. The new UI will co-exist with the old YARN UI, by default it is disabled. Please refer to User documentation of the new YARN UI <https://github.com/apache/hadoop/blob/YARN-3368/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/YarnUI2.md> for more details. In addition, There’re two working-in-progress features need the new UI to be merged to trunk for further development. 1) UI of YARN Timeline Server v2 (YARN-2928) 2) UI of YARN ResourceManager Federation (YARN-2915). *Status of YARN next generation web UI* Completed features - Cluster Overview Page - Scheduler page - Applications / Application / Application-attempts pages - Nodes / Node page Integration to YARN - Hosts new web UI in RM - Integrates to maven build / package Miscs: - Added dependencies to LICENSE.txt/NOTICE.txt - Documentated how to use it. (In hadoop-yarn-project/hadoop-yarn/hadoop- yarn-site/src/site/markdown/YarnUI2.md) Major items will finish on trunk: - Security support We have run the new UI in our internal cluster for more than 3 months, lots of people have tried the new UI and gave lots of valuable feedbacks and reported suggestions / issues to us. We fixed many of them so now we believe it is more ready for wider folks to try. Merge JIRA for Jenkins is: https://issues.apache.org/jira/browse/YARN-4734. The latest Jenkins run <https://issues.apache.org/jira/browse/YARN-4734?focusedCommentId=15583884&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15583884> gave +1. Please share your thoughts about this. Thanks, Wangda
